Carbon Offsetting and Reduction Scheme for International Aviation
The Carbon Offsetting and Reduction Scheme for International Aviation (CORSIA) is a carbon offset and carbon reduction scheme to lower CO2 emissions for international flights and curb the aviation impact on climate change. CORSIA uses market-based environmental policy instruments to offset CO2 emissions: aircraft operators have to purchase carbon credits from the carbon market.
Source: Wikipedia — Carbon Offsetting and Reduction Scheme for International Aviation (CC BY-SA 4.0)